Consider a gene that affects fur color in mice. This gene has two alleles, A and a. If AA mice have white fur, Aa mice have gray fur, and aa mice have black fur, how would we describe the effect of these alleles?

Question

Quizplus · Accepted Answer

The alleles A and a are codominant because they both express their traits when together, resulting in a gray fur phenotype in Aa mice, rather than one allele being completely dominant over the other.

Consider a Gene That Affects Fur Color in Mice